Watch-barrel.



UNITED STATES PATENT OFFICE.

GEORGE F. JOHNSON, OF SPRINGFIELD, ILLINOIS, ASSIGNOR TO ILLINOIS WATCH COMPANY, OF SPRINGFIELD, ILLINOIS. A CORPORATION OF ILLINOIS WATCH-BARREL;

Patented Nov. 14, 1905.

Application filed March 25, 1905. Serial No. 252,017.

citizen of the United States, residing at Spring-- field, in the county of Sangamon, State of Illinois, have invented certain new and useful Improvements in VVatch-Barrels, of which the following is a specification, reference being had to the accompanying drawings.

The object of my invention is to provide a new and improved Watch-barrel which is so constructed and the spring-arbor of which is so constructed that the spring-arbor may be mounted so as to turn in jewels on each side of the spring-barrel and to otherwise improve the watch-barrel in some of the details hereinafter pointed out.

I-Ieretofore it has been the custom to so construct watch-barrels of the type to which my invention relates and the contained springarbor that on account of the construction, shape, and general combination of the parts it has been impracticable to use jewels for the bearings, in which the spring-arbor turns in the barrel.

It is the main object of my invention, as stated above, to construct a barrel which will obviate this difficulty and by enabling the use of jewels for the journals of the spring-arbor to improve the running of the watch and lessen the liability of wear.

In the drawings, Figure 1 is a vertical section of my device, showing part of the movement-plate. Fig. 2 is a horizontal section on the line 2 2 of Fig. 1.

Referring to the drawings, which are of course much enlarged for the clearness of the illustrations, 3 indicates the back movementplate of the watch.

4 indicates a ratchet-wheel which is mounted on the squared outer end of a spring-arbor 5. The spring-arbor 5 is journaled in the movemen t-plate 3 and is provided with a flange 6, which bears upon the inner side of the movement-plate. By means of the bearing of the ratchet-wheel 1 and the flange 6 the springarbor 5 is rotatably held in place with suflicient firmness to prevent its being misplaced.

7 indicates a spring-barrel upon which is formed a main wheel 8. The barrel 7 is closed in by a circular plate 9, which fits within the inner side of the barrel and is supported upon a suitable shoulder, as shown in Fig. 1. The

spring-barrel 7 and the plate 9 are centrally perforated to receive, respectively, jewel-settings 10 and 11, in which are secured, respectively, jewels 12 and 13. The barrel 7 is mounted upon the spring-arbor 5, which is journaled in thejewels 12 and 13 with the flange 6 resting upon the side of the barrel 7 which is nearest the movement-plate 3. The spring-arbor 5 is provided with athreaded portion 1 1, upon which is screwed a spring-hub 15. The screw threaded portion 1 1 is so located that when the hub 15 is screwed in place its surface toward the bottom of the barrel 7 will bear upon the adjacent surface of the jewel 12, thus preventing displacement of the barrel longitudinally of the arbor. The lower end of the spring-arbor 5 is provided with a pivot 16, adapted to be journaled in a suitable portion of the watch-movement. (Not shown.) The spring is located within the barrel 7, the inner end being secured to the hub 15 and the outer end to the inner surface of the wall of the barrel 7 in the usual manner.

When the ratchet-wheel 4c is turned to wind the watch in the usual manner, the mechanism for doing which being so well known and being of any approved form of construction I have not deemed it necessary to show, the spring-arbor 5 is turned with it and the spring is wound, the arbor turning in the jewels 12 and 13. The ratchet-wheel 1 being of course locked against rotating in the opposite direction, the force of the spring in uncoiling rotates the barrel 7 in the usual manner.

What I claim as new, and desire to secure by Letters Patent, is

1. As an improvement in watch-barrels, the combination with a plate, a ratchet-wheel, a springbarrel provided with a main wheel rigid therewith, and jewels axially set in said spring-barrel,of aspring-arbor rigidly mounted atone end in said ratchet-wheel, journaled in said plate, and provided with bearings adapted to be journaled in the jewels of said barrel.

2. As an improvementin watclrbarrels, the combination with a plate, a ratchet-wheel, a spring-barrel provided with a main wheel rigid therewith, and jewels axially set in said spring-barrel, of a spring-arbor rigidly mo unted at one end in said ratchet-wheel, journaled in said plate, and provided with bearings adapted to be journaled in the jewels of said barrel, and a spring-engaging hub removably secured to said spring-arbor Within said barrel.

3. As an improvement in watch-barrels, the

combination with the back movement-plate, nal the bearings of said spring-arbor, and a I and a spring-arbor journaled in said movespring-engaging hub, removably secured to ment-plate and provided with aflange adapted said spring-arbor and adapted to engage one to bear upon the inner side of said movementof the jewels in said barrel between it and the 5 plate and with jewel journal-bearings, of a flange on said spring-arbor.

ratchet-wheel rigidly mounted upon said a GEORGE F. JOHNSON. spring-arbor, a spring-barrel provided with Witnesses: an integral main wheel, jewels set upon each GEORGE A. BATES,

side of said spring-barrel and adapted to jouri AMY SPURWAY. 

